Method of making nozzle structures



June 29, 1965 B. A. SARAFINAS ETAL 3, 9 ,0

METHOD OF MAKING NOZZLE STRUCTURES Original Filed Jan. 2, 1962 VIII II;"IIIIIII v 'IIIII Bruno Sarajz'ms John E. Searle J12,

I nvenioz's United States Patent O 1' windshield nozzle.

This application is a division of pending United States application,Serial No. 163,600, filed January 2, 1962 and now abandoned.

In the drawings:

FIG. 1 is a top plan view of the nozzle prior to sealing;

FIG. 2 is a section taken on line 2-2 of FIG. 1;

FIG. 3 is a side elevation of the nozzle after sealing and engaged witha support;

FIG. 4 is a section taken on line 4-4 of FIG. 3; and

FIG. 5 is a bottom plan view of the nozzle and support shown in FIG. 3.

Referring to the drawing, there is shown a windshield nozzle, or thelike, comprising a head portion and a base portion 12 connected by aconnector portion 14 and formed as a molded flexible plastic unit.

The head portion 10 comprises an arcuate cap element 16 which issubstantially semicircular in configuration and which has a tonguedsurface 18 and an engaging surface 20 in angular relation to the surface18 as shown in FIG. 2. An inlet wall 22 defining an aperture is formedthrough the engaging surface 20 and extends through the head portion 10.To increase the force of the cleaning jet stream, a Venturi 24 is formedin the inlet wall 22 a predetermined distance from the engaging surface20 terminating in an outlet port 26.

The base portion 12 has a support engaging edge 28. Three legs 30 extendfrom the base portion 12 and are spaced from each other and surround, inspaced relation, a tubular element 32. The upper surface of the baseportion 12 comprises a grooved contact surface 34 in substantially rightangle relationship with the axis of the tubular element 32 and anangular surface 36 which is formed in integral angular relationship withthe contact surface 34 as shown in FIG. 2. An inner wall 38 defining anaperture is formed-through the contact surface 34 and extends throughoutthe tubular element 32. The legs 30 are formed with engaging elements40.

An annular sealing ring 42, if required, may be formed at the peripheryof the base portion 12 and extend in the same general direction as thelegs 30 and in circumscribing spaced relation to a portion of the legs30.

The axis of the tubular element 32 and the aperture formed by the inletwall 22 are coincident in the original position as shown in FIG. 2.

The tongued surface 18 is formed originally in spaced angularrelationship with the grooved contact surface 34 and the engagingsurface 20 is formed in acute angular relationship with the angularsurface 36. In the first position shown in FIG. 2, the head portion isspaced from the base portion with the exception of the narrow area inwhich the two portions are connected by the connector portion 14.

The method of making the nozzle, described above, is to first mold thehead and base portions in separated relation and then force the headportion 10 toward the base portion 12 utilizing the connector portion 14as a hinge and place the engaging surface 20 into superposed abuttingrelationship with the angular surface 36 and also place the surface 18into superposed abutting relationice ship with the contact surface '34.This will automatically place the axis of the aperture formed by theinlet wall 22 into an angular relationship with the axis of the tubularelement 32 as best shown in FIG. 4. Electrical heatseal devices may beused to adhere the surface 18 and the engaging surface 28 to the contactsurface 34 and the angular surface 36 respectively. Obviously, any ofthe well-known plastic adhesives may also be used for glu ing the headportion 18 to the base portion 12. The tongue and groove shapes of thesurfaces 18 and 34 will provide an interlock between the head and baseportions 7 1t and 12 to help keep the parts in alignment, as shown byFIGS. 3 and 4.

The nozzle may now be engaged in an aperture formed in a support 44 byflexing the legs 30 down through the wall 46 forming the aperture in thesupport and having the engaging elements 40 locked underneath thesupport in a manner which will sandwich the support between the engagingelements 40 and the annular sealing rnig 42. A carrying tube 48, havingan internal diameter, slightly smaller than the external diameter of thetubular element 32 is press-fitted on the tubular element 32 so that itis, for part of its length, sandwiched between the inner surface of thelegs 30 and the outer surface of the tubular element 32.

Since certain other obvious modifications may be made in the inventionwithout departing from the scope of the invention, it is intended thatall matter contained herein be interpreted in an illustrative and not ina limiting sense.

We claim:

1. A method of making a nozzle structure including the steps of moldinga head section having a centralaperture and a base portion having acentral aperture, each of said portions joined by an integral narrowconnection and being in substantially spaced apart relation, forcing thehead portion toward the base portion by utilizing the connection as ahinge, thereby placing the axis of the aperture of the head portion inangular relationship with the aperture of the base portion.

2. A method of making a nozzle structure including the steps ofsimultaneously forming an apertured head section and a centrallyapertured base section, at least one of said apertures having aconstriction formed adjacent one end thereof and at least one of saidsections having fastening means formed thereon for snappingly engagingan apertured support, each of said sections being substantially spacedfrom each other along opposed nonparallel surfaces having mating tongueon one section and a groove member on the other section associatedtherewith, said sections being integrally joined at an edge to provide aconnector; forcing said sections into surfaceto-surface engagement alongsaid opposed surfaces utilizing said connector as a hinge such that saidtongue and groove members mate and said apertures are angularly alignedto provide a continuous passage through said structure; and adheringsaid sections to one another.

References Cited by the Examiner UNITED STATES PATENTS 2,252,539 8/41Adams 156-212. 2,468,656 4/49 Forest 156285 2,947,653 8/60 Foehr 1562l72,975,092 3/61 Hagerty 156-212 FOREIGN PATENTS 877,253 9/61 GreatBritain.

ALEXANDER WYMAN, Primary Examiner.

EARL M. BERGERT, Examiner.

names I

1. A METHOD OF MAKING A NOZZLE STRUCTURE INCLUDING THE STEPS OF MOLDINGA HEAD SECTION HAVING A CENTRAL APERTURE AND A BASE PORTION HAVING ACENTRAL APERTURE, EACH OF SAID PORTIONS JOINED BY AN INTEGRAL NARROWCONNECTION AND BEING IN SUBSTANTIALLY SPACED APART RELATION, FORCING THEHEAD PORTION TOWARD THE BASE PORTION BY UTILIZING THE CONNECTION AS AHINGE, THEREBY PLACING THE AXIS OF THE APERTURE OF THE HEAD PORTION INANGULAR RELATIONSHIP WITH THE APERTURE OF THE BASE PORTION.